Patient interface device



FIG. 1 is a front perspective view of an embodiment of a patientinterface device according to our new design;

FIG. 2 is a front elevational view of the patient interface device shownin FIG. 1;

FIG. 3 is a rear elevational view of the patient interface device shownin FIG. 1;

FIG. 4 is a left side elevational view of the patient interface deviceshown in FIG. 1, the right side elevational view being similar thereto;

FIG. 5 is a top plan view of the patient interface device shown in FIG.1; and,

FIG. 6 is a bottom plan view of the patient interface device shown inFIG. 1.

The portions drawn in broken lines are shown for illustrative purposesonly and form no part of the claimed design.

The ornamental design for a patient interface device, as shown anddescribed.